<body>
<p>Test simple shared worker sharing cases. Should print several PASS lines followed by DONE.</p>
<div id=result></div>
<script>
function log(message)
{
    document.getElementById("result").innerHTML += message + "<br>";
}

if (window.testRunner) {
    testRunner.dumpAsText();
    testRunner.waitUntilDone();
}

// Load two workers simultaneously, to ensure that simultaneous loads also yield the same instance.
// Loading a worker named "name" tests that workers shutdown when the parent document exits, because other tests also create workers with that same name but with different URLs.
var worker = new SharedWorker('resources/shared-worker-common.js', 'name');
var worker2 = new SharedWorker('resources/shared-worker-common.js', 'name');

try {
    new SharedWorker('resources/empty.js', 'name');
    log("PASS: Creating SharedWorker with different URLs but the same name");
} catch (ex) {
    var exString = ex.toString();
    exString = exString.replace(/file:\/\/.*\//, "")
    log("FAIL: Exception thrown when creating SharedWorker with different URLs but same name: " + exString);
}

// Set something in global context in one worker, read value back on other worker, to make sure they are truly shared.
worker.port.postMessage("eval self.foo");
worker.port.onmessage = function(event)
{
    log((event.data == "self.foo: undefined" ? "PASS: " : "FAIL: ") + "Accessing new instance of shared worker: " + event.data);
    worker.port.postMessage("eval self.foo = 1234");
    worker.port.onmessage = function(event)
    {
        log((event.data == "self.foo = 1234: 1234" ? "PASS: " : "FAIL: ") + "Setting global variable in shared worker: " + event.data);
        worker2.port.postMessage("eval self.foo");
        worker2.port.onmessage = function(event)
        {
            log((event.data == "self.foo: 1234" ? "PASS: " : "FAIL: ") + "Accessing simultaneously-loaded instance of shared worker: " + event.data);
            testNewWorker();
        }
    }
}

function testNewWorker()
{
    // New name, so should be a distinct worker from the previous one.
    var worker3 = new SharedWorker('resources/shared-worker-common.js', 'name2');
    worker3.port.postMessage("eval self.foo");
    worker3.port.onmessage = function(event)
    {
        log((event.data == "self.foo: undefined" ? "PASS: " : "FAIL: ") + "Accessing new instance of shared worker: " + event.data);
        testAlreadyLoaded();
    };
}

function testAlreadyLoaded()
{
    // Make sure that referencing a worker that is already loaded yields the same instance.
    var worker4 = new SharedWorker('resources/shared-worker-common.js', 'name');
    worker4.port.postMessage("eval self.foo");
    worker4.port.onmessage = function(event)
    {
        log((event.data == "self.foo: 1234" ? "PASS: " : "FAIL: ") + "Accessing already-loaded instance of shared worker: " + event.data);
        done();
    };
}

function done()
{
    log("DONE");
    if (window.testRunner)
        testRunner.notifyDone();
}
</script>
</body>
